current_users=['fucker','lover','admin','wMy','zSh']
new_users=['hy','zss','Wmy','Zsh','lyf']
names=[]

for name in current_users:
    names.append(name.lower())

for name in new_users:
    if name.lower() in names:
        print("You need another new name!\n")
    else:
        print("The name is nor used!\n")